Ridley5 opened this issue on Jul 26, 2010 · 1724 posts
bagginsbill posted Thu, 26 August 2010 at 7:31 AM
Quote - so the mathematical pure sphere is in the code?
and the code tells Lux if the sphere is bigger or smaller?
Yes in the LuxRender engine. Hit-testing a ray against a sphere (a point and a radius) is mathematically the 2nd simplest thing to execute in ray tracing. The simplest is hit-testing against an infinite plane.
Even one triangle is more complicated than a sphere. A low-poly spherical mesh is about 100 times more expensive than a sphere.
Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)